Fusion Apollo 12-Inch Marine Subwoofer Grille - White JL Audio Stealthbox Signal-to-Noise ratio is measured in

Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4 ohms

Enable Parking Surveillance mode without hassle

Transducer depth/speed/temperature Depth and Temperature Transducer number of pins 12-pin Transducer supported deadrise/transom angles Up to 25° deadrise

frequency response: 45-20

Fusion Apollo 12-Inch Marine Subwoofer Grille - White JL Audio Stealthbox Signal-to-Noise ratio is measured inFusion includes basic grilles with their extraordinary Apollo marine subwoofers, but you might want some additional protection from flying fish, clumsy passengers, or random bad luck while out on the waves. This shielded Apollo subwoofer grille helps keep your 12" sub safe from physcial harm. And it's built to withstand the elements and harsh marine conditions, including direct sunlight.